Anal fistula x ray

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Manpreet Kaur, MD [2]

Overview

Fistulography is used to diagnose anal fistula in the past but is replaced by MRI nowadays. This is used to find out the anatomy of fistulas.

X Ray

• Fistulography is used to diagnose anal fistula in the past.
• Fistulography is painful and invasive procedure so it is replaced by MRI nowadays.
• This is used to find out the anatomy of fistulas.

Procedure:

• A fine cannula is catheterized through the external opening, a water-soluble contrast agent is injected to find out the fistulous track and after that X-ray is taken.

Drawbacks of fistulography:

• It is very difficult to assess fistula with multiple tracks due to the filling defect with contrast material.
• Fistulography is not used to visualize the anal sphincter.

Perianal fistula source: Dr Mohamed Hossam el Deen,